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Title:
自動車用ホイールディスクの加工方法
Document Type and Number:
Japanese Patent JP4664521
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prolong the life of a metallic mold by forming the outer diameter part of a wheel disk which is joined with a wheel rim in a way that an excessive load is not applied to the metallic mold and a material compared with a conventional forming method. SOLUTION: The part which defines the outer diameter of the wheel disk 3 and becomes the outer diameter part 3a of the wheel disk which is joined with the inner peripheral part of the wheel rim, is first compressed in the direction of thickness by a press working, and an engaging part 3h which is engaged with the wheel rim is formed with a step toward the rear face side, subsequently the engaging part 3h is bent toward the rear face side with a drawing work, subsequently the outer diameter part 3a including the engaging part 3h which is drawn is uniformalized in the vertical direction in a first swaging, subsequently the work piece is formed into a final form and dimension with a second swaging for improving the dimensional accuracy of the outer diameter part 3a.

Inventors:
Noriyuki Fukaya
Application Number:
JP2001123717A
Publication Date:
April 06, 2011
Filing Date:
April 23, 2001
Export Citation:
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Assignee:
Chuo Seiki Co., Ltd.
International Classes:
B21K1/32; B60B3/04; B21D22/26; B21D53/30; B21J5/08
Domestic Patent References:
JP11059101A
JP64011019A
JP2001088504A
Attorney, Agent or Firm:
Hasegawa Yoshimichi